Timer



A. S. GOLDSTEIN,

TIMER. APPLICATION FILED APR. 12'. m9.

Patented Jun 6, 1922.

WMueoo lized v lowing is a specification.

UNITED STATES PATENT OFFICE.

ABRAHAM S. GOLDSTEIN, OF BALTIMORE, MARYLAND, ASSIGNOR TO TIME-RITE MANUFACTURING COMPANY, OF BALTIMORE, MARYLAND, A CORPORATION OF MARYLAND.

TIMER.

Application filed April 12,

T0 allwhom it may concern..-

Be it known that I, ABRAHAM S. Gono- STEIN, a citizen of the United States, residing at Baltimore city, in the State of Maryland, have invented certain new and useful Improvements in Timers, of which the fol- This invention relates to improvements in timers or circuit breakers and has particular reference to a timer device for use in the ignition system of internal combustion en-v gines.

The object of the invention is to provide an improved casing and an improved ar-. rangement of insulating means and contact devices whereby the contacts may be readily renewed and in which the severaliwires utiin the ignition system may be protected against injury and short circuits be avoided. A

The invention is illustrated in the accom-' panying drawing wherein,-

Fig. 1, illustrates an end elevation of the gear casing of an engine and a front elevation of my improved timer attached thereto.

Fig. 2, shows the timer device in vertical longitudinal section.

Fig. 3, illustrates the timer as viewed from the inner or contact side and has one edge of the contact-carryin plate broken away to illustrate the cup-s aped insulation in the casing, and

Fig: 4, shows a vertical cross-section through the timer casing to illustrate the insulation therein and the wire outlet leading therefrom.

Referring to the drawing the numeral 5,

I designates theifront or end of the gear cascasing preferabl ing through which the end 6, of the gear shaft 7, projects. The front side of this gear has an annular recess 8, around the pro ecting shaft-end, and the timer casing, which will presently be described, is designed to seat in said recess and cover the end of the shaft. The" gear-shaft end 6, carries an arm 9, with a recess 10, in the outer end thereof, and-a contact brush 11, loosel fits said recess and is pressed outwardly t erefrom by means of a spring 12, which is confined in the recess behind the brush. Obviously, the brush swings through a circular path as the shaft 7, revolves, and during its travel, is made to pass successively Specification of Letters Patent. Patented June 6, 1922.

1919. Serial no. 289,706.

overseveral contact plates to produce sparks at regular intervals in the cylinders of the engine for igniting the charges.

The timing devices are contained in a casing which latter has an annular wall 13, to snugly fit the annular recess 8, on the gear casing 5, and a cone-shape portion 14, merges and is formed integrally with the said annu the purpose of which will presently be described.

A lining of insulation 17, is formed to snugly fit the interior of the cone portion 14, and to also fit around the lugs 15,-th lining therefore having recesses 18, in its rim edge for the reception of the lugs 15. By this means,- the entire interior of the cone-portion of the timer casing is thickly insulated so that no metal parts or portions of the coneportion are exposed on the interior.

The insulated lining 17, has an opening I 19, whose edges in-practice are smooth, and register with the inner end of a. tube 20, which extends laterally from the cone-pom tion of the timer casing for a purpose that will also presently be explained.

A disk 21, of insulating material snugly fits the interiorof the'annular wall 13 of the timer casing, and the outer side of this disk seats close against the lugs 15,- and on the rim edge 22, of the insulated lining 17. The screws 16, pass through suitable perforations in the disk and screw into the perforations of the lugs 15, and thereby rigidly secure the disk in place against the rim-edge of the insulated lining.

In the present instance the insulated disk 21, is provided with a central hole or perforation 23, to receive the end of the cam shaft.

In the formof device provided the disk 21, with four contact plates 24, equally spaced and all having. their contact faces flush with the inner face of the illustrated, I have of the latter where it is exposed in the insulated-lining chamber.

The ignition wires 26, are passed through the tube 20, into the chamber of the lining 17, and the ends of those wires are attached to the several binding posts 25, by means of binding nuts 27.

In practice the cone-portion of the timer casing is provided with a central depression 28, so that a spring plate 29, may project over said casing and engage the recessed por-. .tion of the casing to clamp it in the annular recess 8,'and permit said casing to have an oscillating movement in said recess 8. a

An arm 30, projects from the timer casing so that an actuating rod 31, may connect therewith and by this means the timer cas- 7 ing may be rotated slightly forward or rearward carrying the contact plates 24, and

disk 21; with it, and thereby advance or retard the spark.

By means of my construction of timer I ma remove the timer-casing from the front en of the 'gear casing, then remove the screws 16 and pull the disk 21, from within the timer casing; then detach the wires and connect the same to a new disk and new contacts. This operation enables the disk and contacts to be renewed without renewing the entire timing device and at a very small cost.

Having described my invention, I claim,--

A timer device comprising a casing having an annular portion and a conical portion which latter has an opening in one side and said casing havin lugs on its interior; a conical interior lining in said casing and fitting around said lugs with its rim edge flush with said lug ends; a disk of insulating material in the casin and seated against the rim edge of the lining and also against said lugs and contact plates attached to the disk and having binding posts projecting through the disk to the side confronting the conical lining.

In testimony whereof I afiix my signature.

ABRAHAM s. GOLDSTEINL' 

